Petebs



@imitan .tetrav gatent Hire..

E. H. ASHCROFT, OF LYNN, MASSACHUSETTS'.

Leners Patent No. 81,060,3m11 August 18, 1868.

envier ron vsnrttirme AND 11ns1ecAT1Ne.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, E. H. AsHcnorT, of Lynn, in the county of Essex, and State of Massachusetts, have invented a newand useful Device for Purposes of Ventilation, Desiceation, 85e.; and do hereby declare the following to be a full, clear, and exact description of the saine, due reference being had to the accompanying f drawings, .making part of this speciiieation, and in which- Figure 1 is a side elevation, Y Figure 2 a. vertical and longitudinal section, and

i Figure 3 a vertical and transverse section of my invention.

i mechanism.

The object ofthis invention. is to create a powerful draught through a pipe or conduit, for the purpose of carrying ofi', in a rapid and eii'ective manner, from buildings or apartments,any foul or tainted air, smoke, 86e., which would otherwise collect and remain in such places; theinvention, when'applied to a suitable device, being further useful for desiccating various substances or materials, such as unwashed wool, Ste.

The invention consists in one or more iishaped pipes or` conduits, one horizontal arm or .portion 0f such T having a blast-pipe, d, disposed within it, and terminating at orvabout the centre oi' communicationof the i horizontall and upright portions of the T, in manner and to operate as hereinafter described.

- In the drawings above referred to, A. denotes'a 'lr-shaped pipe or conduit, `the horizontal portion of which is shown at a, and -the vertical portion at c,`there being free communication through the interior of all parts ofa such T. y

The vertical portion, c, of such T isto connect with the apartment, building, or other object intended to bc puriiied or ventilated, and a blast ofsteam or air forcedthrough thehorizontal pipe d. This blast, crossing the path or opening of the upper end of the pipe c, creates a powerful suction or draught throughit, entirely suiiieient to carry oil rapidly from an apartment any vapors or noxious Yair contained therein.

The steam to bc used to produce the suction and` force ontthe foul air passing up thevertical pipe c, driving it out one end of the horizontal align' a, passes through the inner horizontal pipe d, connection being made in any convenient manner between saidwpipe cl, at its outer end, and a steam-generator. A' strong current of air, cold or heated, niay beforced through pipeV d, instead of steam, this being effected by any suitable In apartments-or buildings where the process of sweating sheep-skins iscarried on, it becomes important to provide some means of thoroughly and at once Ventilating such apartments at a certain stage of progress of the treatment of the skins, the ditiiculty ot accomplishing this heretofore being the cause of destruction of large numbers of skins annually. j I

Applied tofthis purpose, my invcntionjvill be found to be of particular value.

For the purpose of Ventilating sleeping-cars upon railways, or of freeing the holds or cabins of navigable vessels, the invention will also be found'to be of great practical value.

Many other instances of application of my invention will suggest themselves to persons conversant with the subject of ventilation. K I i The invention may further be applied to a suitable reservoir or conduit-containing wool or other kindred substances or materials, for the purpose of drying, which it will accomplish in a short space of time, and with great economy. l p l l Having thus described mylinvention, ivhat'I claim as new, and desire to secure by Letters Patent of the United States, is-

The combination of the T-shape'd'pipe A and the inner horizontal one, d, constructed and operated in the manner substantially as shown and described and for the purpose set forth. i

n. H'. AsHonoFT. Witnesses:

EDWIN J. WRIGHT,

5 I 0. E. Asncnorr. 

